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LZ Induction Heating Systems
Precious Metal Induction Melting Furnace
Precious-metal melting needs a small, clean heat and a temperature that stops where the alloy requires it. The catalogue shows a 1 kg class gold furnace with a maximum around 1150°C, plus 15 kW and 25 kW induction melters for gold and silver. The 15 kW set is listed around 1–3 kg of gold or silver on single-phase 220 V. The 25 kW set is listed around 3–5 kg on three-phase 380 V. Frequency is about 30–100 kHz. These kilogram figures are not the kilowatt figures. Copper and other non-ferrous heats can be quoted on the same family when the crucible and the coil match the metal.
What to check before you enquire
- 1 kg class furnace, about 1150°C max in the catalogue.
- 15 kW, 220 V, about 1–3 kg gold or silver.
- 25 kW, 380 V, about 3–5 kg gold or silver.
- 30–100 kHz, water cooling 0.2 MPa.
Typical applications
- Gold
- Silver
- Copper alloys
- Small jewelry heats
Catalogue models
| Model | Capacity | Supply | Current | Frequency | Cooling water | Size | Weight |
|---|---|---|---|---|---|---|---|
| LZ-15 kW | 1–3 kg (2.2–6.61 lb) gold/silver | 220 V 1-phase | 37 A | 30–100 kHz | 0.2 MPa (29 psi) | 500×310×460 mm (19.69×12.2×18.11 in) | 30 kg (66 lb) |
| LZ-25 kW | 3–5 kg (6.61–11 lb) gold/silver | 380 V 3-phase | 54 A | 30–100 kHz | 0.2 MPa (29 psi) | 550×320×480 mm (21.65×12.6×18.9 in) | 38 kg (84 lb) |
1 kg class gold furnace
| Item | Catalogue figure |
|---|---|
| Maximum temperature | 1150°C (2102°F) |
| Power | about 1500 W |
| Supply | 110 V, 50/60 Hz, about 7 A |
| Stated accuracy | ±0.5% |
| Working environment | 0–50°C (32–122°F), 30–85% RH |
| Size | 310×360×370 mm (12.2×14.17×14.57 in) |
| Net weight | 15 kg (33 lb) |
Figures are taken from the LZ catalogue. Final power, frequency and capacity depend on the metal, coil, lining, duty cycle and your mains voltage. Ask for a technical proposal before you order. Figures in parentheses are US units (pounds, inches, feet, °F, psi).
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